Hair Treatment Composition Comprising a Pressure Sensitive Adhesive

ABSTRACT

A hair treatment composition comprising an acrylic pressure sensitive adhesive.

FIELD OF THE INVENTION

This invention relates to hair treatment compositions and to their usein the treatment of hair.

BACKGROUND AND PRIOR ART

Pressure sensitive adhesives (PSAs) have been used in hair carecompositions as described in U.S. Pat. No. 5,166,276, EP408311, EP412707and EP412704. However these PSAs tend to hydrolyse in aqueous andhydroalcoholic hair care products.

WO2004/084846 and co-pending applications EP05256819 and EP05256820disclose hair styling compositions comprising silicone pressuresensitive adhesives, however there is still a need to provideformulations comprising sensitive pressure sensitive adhesives withimproved feel.

Furthermore the silicone pressure sensitive adhesives of the prior arthave a detrimental effect on the foaming properties of some mousseproducts. The present invention enables products to be formed withsuperior foaming, yet having the positive sensory effects of PSAsdescribed in the citations above.

SUMMARY OF THE INVENTION

Accordingly, this invention provides a hair treatment compositioncomprising an acrylic pressure sensitive adhesive.

A method for styling hair is also described which comprises contactingthe hair with the composition described above.

DETAILED DESCRIPTION OF THE INVENTION

Unless specified otherwise, all wt % values quoted hereinafter arepercentages by weight based on total weight of the hair treatmentcomposition.

Silicone Pressure Sensitive Adhesives

This present invention relates to hair treatment compositions comprisingan acrylic pressure sensitive adhesive.

“Pressure sensitive adhesive” (PSA) materials are permanently tacky atroom temperature and able to develop measurable adhesion to a surfacesimply upon contact or by the application of a light pressure. Generallythey do not require heat. No chemical reaction takes place between theadhesive and the adherent, no curing of the adhesive is necessary and nosolvent is required to be lost during the adhesion process.

Acrylic PSAs are random copolymers comprising an acrylic group having aside-chain with at least 4 carbons (eg n-butyl acrylate or 2-ethylhexylacrylate) and having a low glass transition temperature Tg, a shortside-chain acrylic such as methyl acrylate to adjust the Tg, and acrylicacid to improve adhesion and optimise elongational properties (i.e.,their mechanical response to deformation in uniaxial extension). Smallmolecule additives such as tackifiers may be included, essentially toadjust the Tg and optimise dissipative properties but are not essential.

The acrylic sensitive pressure adhesive is preferably in the form of anemulsion.

Suitable water-born acrylic sensitive pressure adhesives include DowCorning PA-0560, Dow Corning PA-0580, Dow Corning MG-0560, Dow CorningMG-0580, Tackwhite NA 55 ex Ichemco srl, Tackwhite A 4 MED ex Ichemcosrl NACOR 38-088A ex National Starch & Chemical, Acronal 80 D ex BASFAG, Acronal 85 D BASF AG, Acronal A220 exBASF AG, Acronal N 285 ex BASFAG, Acronal V 210 ex BASF AG and Acronal V212 ex BASF AG.

Suitable solvent born acrylic sensitive pressure adhesives include

PA-0607 ex Dow Corning, PA-0610 ex Dow Corning, MG-0607 ex Dow Corning,MG-0610 ex Dow Corning, Duro Tak 387-2353/87-2353 ex National StarchDuro-Tak 387-2510/87-2510 ex National Starch Duro-Tak 87-900A exNational Starch Duro-Tak 87-9301 ex National Starch Duro-Tak 87-200A exNational Starch Solacril 742 ex Ichemo srl Solucryl 147 ex UCB ChemicalsSolucryl 380 ex UCB Chemicals Gelva 737 ex Monsanto

Preferably the acrylic pressure sensitive adhesive is present at levelsfrom 0.01% to 10% by weight of the total composition. More preferredamounts of acrylic pressure sensitive adhesive in the compositions ofthe invention are from 0.1% to 5% by weight of the composition, evenmore preferably from 0.5% to 3% by weight.

Hair Styling Polymer

The compositions of the invention may optionally comprise from 0.001% to10% by weight of a hair styling polymer. More preferred amounts of hairstyling polymer in the compositions of the invention are from 0.1% to 5%by weight of the composition, even more preferably from 0.5% to 3% byweight.

Hair styling polymers are well known. Suitable hair styling polymersinclude commercially available polymers that contain moieties thatrender the polymers cationic, anionic, amphoteric or nonionic in nature.Suitable hair styling polymers include, for example, block and graftcopolymers. The polymers may be synthetic or naturally derived.

Surfactant

The compositions of the invention may comprise surfactant in addition tothat required for the preparation of any PSA emulsion. The surfactantswhich are suitable for use in the compositions of the invention may benonionic, cationic, anionic, zwitterionic or a mixture of suchsurfactants depending on the product form.

The hair styling compositions of the invention preferably comprise anon-ionic surfactant, in an amount of up to 5%, preferably from 0.01% to1%, most preferably from 0.02% to 0.8% by weight based on total weight.

Examples of suitable non-ionic surfactants are condensation products ofaliphatic (C₈-C₁₈) primary or secondary linear or branched chainalcohols or phenols with alkylene oxides, usually ethylene oxide andgenerally having at least 15, preferably at least 20, most preferablyfrom 30 to 50 ethylene oxide groups. Other suitable non-ionics includeesters of sorbitol, esters of sorbitan anhydrides, esters of propyleneglycol, fatty acid esters of polyethylene glycol, fatty acid esters ofpolypropylene glycol, ethoxylated esters and polyoxyethylene fatty etherphosphates.

Of particular use are those non-ionic surfactants of general formulaR(EO)_(x) H, where R represents a straight or branched chain alkyl grouphaving an average carbon chain length of 12-18 carbon atoms and x rangesfrom 30 to 50. Specific examples include steareth-40, steareth-50,ceteareth-30, ceteareth-40, ceteareth-50 and mixtures thereof. Suitablecommercially available examples of these materials include Unicol SA-40(Universal Preserv-A-Chem), Empilan KM50 (Albright and Wilson), NONIONPS-250 (Nippon Oils & Fats), Volpo CS50 (Croda Inc), and Incropol CS-50(Croda Inc).

Water

Compositions of the present invention can also include water, preferablydistilled or de-ionised, as a carrier for the PSAs. Water is preferablyused as an emulsion when used as a carrier for acrylic PSAs. It mayadditionally be a carrier or a solvent for other components. Whenpresent the water will typically be present in amounts ranging from 30%to 98%, preferably from 50% to 95% by weight.

Solvent/Carrier

Compositions of the present invention can also include solvents, as acarrier or solvent for the acrylic PSAs and other components. Whenpresent the solvent will typically be present in amounts ranging from30% to 98%, preferably from 50% to 95% by weight. Examples of solventsare hydrocarbons, esters, alcohols etc. Particularly preferred solventsinclude ethyl acetate and isopropanol.

Emollients

Emollients such as hydrocarbons, esters, silicone fluids, may beincluded in the compositions of the invention. Emollients may typicallybe present in compositions of the invention in amounts of from 0.001% to10% by weight, preferably 0.1% to 3% by weight. Emollients may be singlecompounds or mixtures of two or more compounds from the same class ordifferent general classes.

Emollients may be included in any of the compositions of the invention,regardless of whether they contain a hair styling polymer. In oneembodiment of the invention, the compositions (such as aerosol mousseformulations, for example) comprise a hair conditioning agent and aresubstantially free of hair styling polymer.

Suitable hydrocarbons can be either straight or branched chain and cancontain from about 10 to about 16, preferably from about 12 to about 16carbon atoms. Examples of suitable hydrocarbons are decane, dodecane,tetradecane, tridecane, and mixtures thereof.

Suitable oily or fatty materials are selected from hydrocarbon oils,fatty esters and mixtures thereof. Straight chain hydrocarbon oils willpreferably contain from about 12 to about 30 carbon atoms. Also suitableare polymeric hydrocarbons of alkenyl monomers, such as C₂-C₆ alkenylmonomers.

Specific examples of suitable hydrocarbon oils include paraffin oil,mineral oil, saturated and unsaturated dodecane, saturated andunsaturated tridecane, saturated and unsaturated tetradecane, saturatedand unsaturated pentadecane, saturated and unsaturated hexadecane, andmixtures thereof. Branched-chain isomers of these compounds, as well asof higher chain length hydrocarbons, can also be used.

Suitable fatty esters are characterised by having at least 10 carbonatoms, and include esters with hydrocarbyl chains derived from fattyacids or alcohols, Monocarboxylic acid esters include esters of alcoholsand/or acids of the formula R′COOR in which R′ and R independentlydenote alkyl or alkenyl radicals and the sum of carbon atoms in R′ and Ris at least 10, preferably at least 20. Di- and trialkyl and alkenylesters of carboxylic acids can also be used.

Particularly preferred fatty esters are mono-, di- and triglycerides,more specifically the mono-, di-, and tri-esters of glycerol and longchain carboxylic acids such as C₁-C₂₂ carboxylic acids. Preferredmaterials include cocoa butter, palm stearin, sunflower oil, soyabeanoil and coconut oil.

Especially preferred is isopropyl myristate.

The oily/fatty material is suitably present at a level of from 0.05 to10, preferably from 0.2 to 5, more preferably from about 0.5 to 3 wt %.

Examples of suitable silicone based emollients useful herein can includeeither cyclic or linear polydimethylsiloxanes, phenyl and alkyl phenylsilicones, and silicone copolyols. Cationic conditioning agents usefulherein can include quaternary ammonium salts or the salts of fattyamines, such as cetyl ammonium chloride, for example.

Compositions according to the invention may, optionally, comprise from0.1% to 10% by weight of a volatile silicone as the hair conditioningagent. Volatile silicones are well known in the art and are commerciallyavailable and include, for example linear and cyclic compounds. Volatilesilicone oils are preferably linear or cyclic polydimethylsiloxanescontaining from about three to about nine silicon atoms.

The compositions of the invention may optionally comprise a cross-linkedsilicone polymer.

The cross-linked silicone polymer is preferably a non-rigidemulsion-polymerised and may be present in compositions of the inventionin an amount of up to 10% by weight based on the total weight of thecomposition, more preferably from 0.2% to 6% by weight, most preferablyfrom 0.5 to 5% by weight.

Preferred silicone polymers for use in the invention arepolydiorganosiloxanes, preferably derived from suitable combinations ofR₃SiO_(0.5) units and R₂SiO units where each R independently representsan alkyl, alkenyl (e.g., vinyl), alkaryl, aralkyl, or aryl (e.g. phenyl)group. R is most preferably methyl.

The preferred silicone polymers of the invention are cross-linkedpolydimethyl siloxanes (which have the CTFA designation dimethicone),and cross-linked polydimethyl siloxanes having end groups such ashydroxyl (which have the CTFA designation dimethiconol). Good resultshave been obtained with cross-linked dimethiconol.

Cross-linking of the silicone polymer is typically introducedconcurrently during emulsion polymerisation of the polymer through theinclusion of the required amount of trifunctional and tetrafunctionalsilane monomer units, for example, those of formula:

-   -   R Si (OH)₃ wherein R represents an alkyl, alkenyl (e.g. vinyl),        alkaryl, aralkyl or aryl (e.g. phenyl) group, preferably methyl.

The degree of cross-linking of the silicone polymer can be measured asthe percentage of branched monomer units in the silicone polymer and isfrom 0.05% to 10%, preferably being in the range 0.15% to 7%, e.g. from0.2% to 2%. Increasing cross-linking is found to improve stylingbenefits but also to reduce conditioning performance somewhat, socompromise levels must be selected with properties optimised to suitconsumer preferences in different cases. Good overall performance hasbeen obtained with dimethiconol 0.3% cross-linked.

Suitable emulsion polymerised cross-linked silicone polymers arecommercially available or can be readily made using conventionaltechniques well known to those skilled in the art.

Cross-linked silicone polymers are described in EP 818190, the contentsof which are incorporated herein by reference.

Cationic Conditioning Agents

The compositions of the invention may optionally comprise cationicsurfactants, used singly or in admixture.

Cationic surfactants useful in compositions of the invention containamino or quaternary ammonium hydrophilic moieties, which are positivelycharged when, dissolved in the aqueous composition of the presentinvention.

Examples of suitable cationic surfactants are those corresponding to theformula:

[N(R₁)(R₂)(R₃)(R₄)]⁺(X)⁻

in which R₁, R₂, R₃, and R₄ are independently selected from (a) analiphatic group of from 1 to 22 carbon atoms, or (b) an aromatic,alkoxy, polyoxyalkylene, alkylamido, hydroxyalkyl, aryl or alkylarylgroup having up to 22 carbon atoms; and X is a salt-forming anion suchas those selected from halogen, (e.g. chloride, bromide), acetate,citrate, lactate, glycolate, phosphate nitrate, sulphate, andalkylsulphate radicals.

The aliphatic groups can contain, in addition to carbon and hydrogenatoms, ether linkages, and other groups such as amino groups. The longerchain aliphatic groups, e.g., those of about 12 carbons, or higher, canbe saturated or unsaturated.

The most preferred cationic surfactants for conditioner compositions ofthe present invention are monoalkyl quaternary ammonium compounds inwhich the alkyl chain length is C8 to C14.

Suitable examples of such materials correspond to the formula:

[N(R₅)(R₆)(R₆)(R₇)(R₈)]⁺(X)⁻

in which R₅ is a hydrocarbyl chain having 8 to 14 carbon atoms or afunctionalized hydrocarbyl chain with 8 to 14 carbon atoms andcontaining ether, ester, amido or amino moieties present as substituentsor as linkages in the radical chain, and R₆, R₇ and R₈ are independentlyselected from (a) hydrocarbyl chains of from 1 to about 4 carbon atoms,or (b) functionalized hydrocarbyl chains having from 1 to about 4 carbonatoms and containing one or more aromatic, ether, ester, amido or aminomoieties present as substituents or as linkages in the radical chain,and X is a salt-forming anion such as those selected from halogen, (e.g.chloride, bromide), acetate, citrate, lactate, glycolate, phosphatenitrate, sulphate, and alkylsuiphate radicals.

The functionalised hydrocarbyl chains (b) may suitably contain one ormore hydrophilic moieties selected from alkoxy (preferably C₁-C₃alkoxy), polyoxyalkylene (preferably C₁-C₃ polyoxyalkylene), alkylamido,hydroxyalkyl, alkylester, and combinations thereof.

Preferably the hydrocarbyl chains R₁ have 12 to 14 carbon atoms, mostpreferably 12 carbon atoms. They may be derived from source oils whichcontain substantial amounts of fatty acids having the desiredhydrocarbyl chain length. For example, the fatty acids from palm kerneloil or coconut oil can be used as a source of C₈ to C₁₂ hydrocarbylchains.

Typical monoalkyl quaternary ammonium compounds of the above generalformula for use in shampoo compositions of the invention include:

(i) lauryl trimethylammonium chloride (available commercially as ArquadC35 ex-Akzo); cocodimethyl benzyl ammonium chloride (availablecommercially as Arquad DMCB-80 ex-Akzo)(ii) compounds of the formula:

[N(R₁)(R₂)((CH₂CH₂O)_(x)H)((CH₂CH₂O)_(y)H)]⁺(X)⁻

wherein:x+y is an integer from 2 to 20;R₁ is a hydrocarbyl chain having 8 to 14, preferably 12 to 14, mostpreferably 12 carbon atoms or a functionalised hydrocarbyl chain with 8to 14, preferably 12 to 14, most preferably 12 carbon atoms andcontaining ether, ester, amido or amino moieties present as substituentsor as linkages in the radical chain;R₂ is a C₁-C₃ alkyl group or benzyl group, preferably methyl, andX is a salt-forming anion such as those selected from halogen, (e.g.chloride, bromide), acetate, citrate, lactate, glycolate, phosphatenitrate, sulphate, methosulphate and alkylsulphate radicals.

Suitable examples are PEG-n lauryl ammonium chlorides (where n is thePEG chain length), such as PEG-2 cocomonium chloride (availablecommercially as Ethoquad C12 ex-Akzo Nobel); PEG-2 cocobenzyl ammoniumchloride (available commercially as Ethoquad CB/12 ex-Akzo Nobel); PEG-5cocomonium methosulphate (available commercially as Rewoquat CPEMex-Rewo); PEG-15 cocomonium chloride (available commercially as EthoquadC/25 ex-Akzo)

(iii) compounds of the formula:

[N(R₁)(R₂)(R₃)((CH₂)_(n)OH)]⁺(X)⁻

wherein:n is an integer from 1 to 4, preferably 2;R₁ is a hydrocarbyl chain having 8 to 14, preferably 12 to 14, mostpreferably 12 carbon atoms;R₂ and R₃ are independently selected from C₁-C₃ alkyl groups, and arepreferably methyl, andX⁻ is a salt-forming anion such as those selected from halogen, (e.g.chloride, bromide), acetate, citrate, lactate, glycolate, phosphatenitrate, sulphate, and alkylsulphate radicals.

Suitable examples are lauryldimethylhydroxyethylammonium chloride(available commercially as Prapagen HY ex-Clariant)

Mixtures of any of the foregoing cationic surfactants compounds may alsobe suitable.

Examples of suitable cationic surfactants include:

quaternary ammonium chlorides, e.g. alkyltrimethylammonium chlorideswherein the alkyl group has from about 8 to 22 carbon atoms, for exampleoctyltrimethylammonium chloride, dodecyltrimethylammonium chloride,hexadecyltrimethylammonium chloride, cetyltrimethylammonium chloride,octyldimethylbenzylammonium chloride, decyldimethylbenzylammoniumchloride, stearyldimethylbenzylammonium chloride,didodecyldimethylammonium chloride, dioctadecyldimethylammoniumchloride, tallow trimethylammonium chloride, cocotrimethylammoniumchloride, and the corresponding salts thereof, e.g., bromides,hydroxides. Cetylpyridinium chloride or salts thereof, e.g., chloride

Quaternium −5 Quaternium −31 Quaternium −18

and mixtures thereof.

In the conditioners of the invention, the level of cationic surfactantis preferably from 0.01 to 10, more preferably 0.05 to 5, mostpreferably 0.1 to 2 wt % of the total composition.

Product Form

Compositions of the present invention are formulated into hair stylingcompositions which may take a variety of forms, including, for example,mousses, gels, lotions, creams, sprays and tonics. These product formsare well known in the art.

The preferred product is a spray and/or aerosol and/or mousse.

The compositions of the invention are preferably foaming compositions.Foaming compositions are those compositions which are capable of forminga foam on dispensation from a suitable container, such as a pressurisedaerosol container. More preferably are in the form of a hair mousse.

Aerosol-form compositions of the invention will include an aerosolpropellant which serves to expel the other materials from the container,and forms the mousse character in mousse compositions. The aerosolpropellant included in styling compositions of the present invention canbe any liquefiable gas conventionally used for aerosol containers.Examples of suitable propellants include dimethyl ether and hydrocarbonpropellants such as propane, n-butane and iso-butane. The propellantsmay be used singly or admixed. Water insoluble propellants, especiallyhydrocarbons, are preferred because they form emulsion droplets onagitation and create suitable mousse foam densities.

The amount of the propellant used is governed by normal factors wellknown in the aerosol art. For mousses the level of propellant isgenerally up to 35%, preferably from 2% to 30%, most preferably from 3%to 15% by weight based on total weight of the composition. If apropellant such as dimethyl ether includes a vapour pressure suppressant(e.g. trichloroethane or dichloromethane), for weight percentagecalculations, the amount of suppressant is included as part of thepropellant. For aerosol sprays the levels of propellant are usuallyhigher; preferably from 30 to 98 wt % of the total composition, morepreferably 50 to 95 wt %.

Preferred propellants are selected from propane, n-butane, isobutane,dimethyl ether and mixtures thereof. Preferably, the propellantcomprises dimethyl ether and at least one of propane, n-butane andisobutane.

The method of preparing aerosol hair styling mousse compositionsaccording to the invention follows conventional aerosol fillingprocedures. The composition ingredients (not including the propellant)are charged into a suitable pressurisable container which is sealed andthen charged with the propellant according to conventional techniques.

Compositions of the invention may also take a non-foaming product form,such as a hair styling cream or gel. Such a cream or gel will include astructurant or thickener, typically at a level of from 0.1% to 10%,preferably 0.5% to 3% by weight based on total weight.

Examples of suitable structurants or thickeners are polymeric thickenerssuch as carboxyvinyl polymers. A carboxyvinyl polymer is an interpolymerof a monomeric mixture comprising a monomeric olefinically unsaturatedcarboxylic acid, and from about 0.01% to about 10% by weight of thetotal monomers of a polyether of a polyhydric alcohol. Carboxyvinylpolymers are substantially insoluble in liquid, volatile organichydrocarbons and are dimensionally stable on exposure to air. Suitablythe molecular weight of the carboxyvinyl polymer is at least 750,000,preferably at least 1,250,000, most preferably at least 3,000,000.Preferred carboxyvinyl polymers are copolymers of acrylic acidcross-linked with allylsucrose or allylpentaerythritol as described inU.S. Pat. No. 2,798,053. These polymers are provided by B.F. GoodrichCompany as, for example, CARBOPOL 934, 940, 941 and 980. Other materialsthat can also be used as structurants or thickeners include those thatcan impart a gel-like viscosity to the composition, such as watersoluble or colloidally water soluble polymers like cellulose ethers(e.g. methylcellulose, hydroxyethylcellulose,hydroxypropylmethylcellulose and carboxymethylcellulose), guar gum,sodium alginate, gum arabic, xanthan gum, polyvinyl alcohol, polyvinylpyrrolidone, hydroxypropyl guar gum, starch and starch derivatives, andother thickeners, viscosity modifiers, gelling agents, etc. It is alsopossible to use inorganic thickeners such as bentonite or laponiteclays.

The hair styling compositions of the invention can contain a variety ofnon-essential, optional components suitable for rendering thecompositions more aesthetically acceptable or to aid use, includingdischarge from the container, of the product. Such conventional optionalingredients are well known to those skilled in the art, e.g.preservatives such as benzyl alcohol, methyl paraben, propyl paraben andimidazolidinyl urea, fatty alcohols such as cetearyl alcohol, cetylalcohol and stearyl alcohol, pH adjusting agents such as citric acid,succinic acid, sodium hydroxide and triethanolamine, colouring agentssuch as any of the FD&C or D&C dyes, perfume oils, chelating agents suchas ethylenediamine tetraacetic acid, and polymer plasticising agentssuch as glycerin and propylene glycol

The invention will now be further illustrated by the following,non-limiting Examples.

Examples of the invention are illustrated by a number, comparativeexamples are illustrated by a letter.

Act. Chemical name Trade name Manufacturer level % quaternized Gafquat734 ISP 50% vinylpyrrolidone/ dimethylaminoethyl- methacrylate copolymerBranched dimethiconol DC1787 DOW CORNING 55% emulsion LPG 0.29 HARP ®AP40 HARP 100%  (Propane/Butane) INTERNATIONAL Acrylic co-polymer PRIMALPS83-D ROHM and HAAS 53% emulsion Ceteareth-50 Empilan Albright & 100% KM50FK Wilson Example A Example 1 Gafquat 734   4%   2% DC1787 3.63%3.63% PRIMAL PS83-D 1.88% HARP ® AP40   8%   8% surfactant 0.46% 0.46%water water up to 100% water up to 100%

A set of six 7 g/10″ ‘virgin’ Spanish hair switches were used. Theswitches were washed following the protocol: i) 0.7 ml of 16% wt.SLES.2EO solution was applied along the length of the switch hair andagitated for 30 seconds; ii) the switch was then rinsed under warm(30-35° C.) running water for 30 seconds; iii) further 0.7 ml of 16% wt.SLES.2EO solution was applied, followed by 30 seconds of agitation; iv)finally the hair was rinsed for 1 minute. The switches were then toweldried and combed carefully to detangle.

Each switch was treated by application of 0.05 g of mousse per g of hair(0.35 g per switch). The mousse was spread using thumb and forefingerthrough the length of the switches and rubbed gently to ensure evendistribution. Three switches (1-3) were treated with Example 1 and threeswitches (4-6) were treated with Example A. The switches were thensuspended vertically from a clamp stand and dried using a diffuserdrier. Each switch was then combed 5 times. One switch from each of thetreatments is then presented in a pair to a panel of 9 assessors.

The panellists were asked to assess the amount of flyaway and hairspread out of the switches and make a forced choice (to choose theswitch that has less of these attributes). The results were analysedusing statistical programme Salon Sys, which uses Chi-square analysis.

Results

Preference Example A vs Example 1 31:69 (significant)it is thus demonstrated that the Example according to the invention ispreferred.

Comparison to Silicone Pressure Sensitive Adhesives Materials

Act. Chemical name Trade name Manufacturer level % Tricaprylin PANACET800 NOF 100 COPORATION Pentaerythritol CETIOL PEEH-4 COGNIS 100 Tetra-2-JAPAN ethylhexanoate Polyoxyethylene EMALEX 710 NIHON 100 (10) EMULSIONlauryl ether LPG 0.29 HARP ® AP40 HARP 100 (Propane/Butane)INTERNATIONAL Acrylic co-polymer PRIMAL PS83-D ROHM and HAAS 53 emulsionBio-PSA emulsion DC ® 5-7200 DOW CORNING 60 Bio-PSA emulsion DC ® 5-7300DOW CORNING 60

The silicone PSA emulsions are defined below

DC ® 5-7300 DC ® 5-7200 Product code 18393-45 17724-65-A % internalphase(solvent + 60 60 PSA) PSA:solvent ratio 40:60 60:40 Solventisododecane 1 cSt PDMS Resin:Polymer ratio 65:35 65:35 Particle size D504.312 μm 10 μm (Microtrack) Emulsifier anionic anionic

COMPARATIVE EXAMPLES

B C D E F G DC ® 5-7200 1.67 1.67 1.67 DC ® 5-7300 2.5 2.5 2.5 PANACET800 0.5 0.5 CETIOL 0.5 0.5 PEEH-4 EMALEX 0.5 0.5 0.5 0.5 0.5 0.5 CAP40 88 8 8 8 8 water Up Up Up Up Up Up to 100 to 100 to 100 to 100 to 100 to100

EXAMPLES

2 3 4 PRIMAL PS83-D 1.13 1.13 1.13 PANACET 800 0.5 CETIOL PEEH-4 0.5EMALEX 0.5 0.5 0.5 CAP40 8 8 8 water Up to 100 Up to 100 Up to 100

2 g/10″ ‘virgin’ Spanish hair switches were used. The switches werewashed in sets of 5 following the protocol: i) 1 ml of 16% wt. SLES.2EOsolution was applied along the length of the wet hair and agitated for30 seconds; ii) the switches were then rinsed under warm (30-35° C.)running water for 30 seconds; iii) further 1 ml of 16% wt. SLES.2EOsolution was applied, followed by 30 seconds of agitation; iv) finallythe hair was rinsed for 1 minute. The switches were then towel dried andcombed carefully to detangle. The switches were treated in sets of 5applying 0.1 g of mousse per g of hair (1 g per set). The mousse wasspread using thumb and forefinger through the length of the switches andrubbed gently to ensure even distribution. The switches were combedthrough separately whilst suspended vertically from a clamp stand, eachswitch was aligned straight and smoothed into tight rod-like bundle byrunning thumb and forefinger along the length of the switch and thenallowed to dry naturally overnight at 20° C. and 50% RH. The switcheswere then hung against a light panel and photographed. The generatedcolour digital images were rendered into grey-scale format. Thegrey-scale images were subsequently converted into a binary form (i.e.composed only of black and white pixels). The dimensionless 2Dprojection area of each switch was used as a measure of the extent ofswitch spread out (loss of style). The projection area was calculatedfrom the number of black pixels. 5 switches were used per treatment ineach experiment and the results were averaged across the set. Eachtreatment was tested in three independent experiments and the resultswere averaged once again.

The data were normalised by taking the ratio of the projection area tothe average switch projection area calculated for the set of switchestreated with Example 2. One can see from the presented data bellow thatthe addition that the acrylic pressure sensitive adhesive performsbetter in the presence of PANACET 800 and CETIOL PEEH in comparison tothe silicone pressure sensitive adhesives.

Examples 2 B C 3 D E 4 F G 1 1.7 +/− 0.1 1.3 +/− 0.3 1.0 +/− 0.5 3.3 +/−0.1 3.0 +/− 0.1 1.4 +/− 0.4 3.2 +/− 0.1 3.4 +/− 0.1

The following are Examples according to the invention:

Example 5 Aerosol Mousse

Gafquat 734 ICP   2% DC1787 Dow Corning 3.6% Dow Corning PA- Dow Corning2.5% 0560 CAP 40   8% Empilan KM50FK Albright & Wilson 0.46%  waterwater up to 100%

Example 6 Aerosol Mousse

Dow Corning Dow Corning  2.5% MG-0580 DC17 87 Dow Corning  2.5% IPMUniqema   2% CATION VB-M NOF Corporation 0.34% KALCOL 8688 Kao 0.32%KALCOL 6870 Kao 0.32% EMALEX Nihon   1% 710 CAP40   8% water Up to 100%

Example 7 Cream

Tackwhite Ichemco SRL 2.0% NA 55 DC1787 Dow Corning 3.5% monopropyleneICI Chemicals and   3% glycol Polymers LTD isopropyl Berk LTD   1%palmitate IPM Uniqema 0.5% SALCARE Allied Colloids 1.75%  SC91 water Upto 100%

Example 8 Pump Mousse

ACRONAL V212 BASF CAPB Albright and 0.35% Wilson Tween 20 Uniqema 0.25%cremophor RH 410 BASF  0.3% DC 193 Dow Corning 0.15% Luviquat FC 550BASF 3.75% PVP/VA W735 GAF Chemicals   2% Corporation mono propylene ICIChemicals and   2% glycol Ppolymers LTD citric acid 0.15% sodiumbenzoate  0.5% water to 100%

Example 9 Cream

Acronal V215 Dow Corning 2.5% KALCOL 8688 Kao 1.5% KALCOL 6870 Kao 1.5%Polysurf 67 Hercules 0.03%  GENAMINE CTAC Clariant 2.4% IPM Uniqema1.00%  Luviquat FC 550 BASF 1.5% DC1787 Dow Corning 1.5% Water Up to100%

1. A hair treatment composition comprising an acrylic pressure sensitiveadhesive, the acrylic pressure sensitive adhesive comprising an acrylicgroup having a side chain with at least 4 carbon atoms, short side chainacrylic and acrylic acid.
 2. A hair treatment composition according toclaim 1 in which the acrylic pressure sensitive adhesive is present inan emulsion.
 3. A composition according to claim 1 which furthercomprises an emollient.
 4. A composition according to claim 3 in whichthe emollient is selected from the group consisting of isopropylmyristate or tricaprilin.
 5. A composition according to claim 1 which isa leave on composition.
 6. A composition according to claim 1 which isin the form of a mousse.
 7. A hair treatment composition according toclaim 6 which further comprises hydrocarbon propellant.
 8. A method forstyling hair which comprises contacting the hair with a composition inaccordance with claim 1.